FULL PRODUCT VERSION :
java version "1.5.0_11"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_11-b03)
Java HotSpot(TM) Client VM (build 1.5.0_11-b03, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Windows XP

A DESCRIPTION OF THE PROBLEM :
During installation, the installer write the JavaHome path to the Windows registry. In 1.5.0_11, it just writes "1" instead of the path:

[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit\1.5]
"JavaHome"="1"
"MicroVersion"="0"

[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit\1.5.0_11]
"JavaHome"="1"
"MicroVersion"="0"

So, applications, that need this, fail to start (like NetBeans).

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Install JDK 1.5.0_11. This was OK since 1.5.0_10.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit\1.5]
"JavaHome"="D:\jdk5.0"
"MicroVersion"="0"

[HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit\1.5.0_11]
"JavaHome"="D:\jdk5.0"
"MicroVersion"="0"
ACTUAL -
See above.

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
Change the registry manually after installation.